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audio: Never send migration section 

The audio migration vmstate is empty, and always has been; we can't
just remove it though because an old qemu might send it us.
Changes with -audiodev now mean it's sometimes created when it didn't
used to be, and can confuse migration to old qemu.

Change it so that vmstate_audio is never sent; if it's received it
should still be accepted, and old qemu's shouldn't be too upset if it's
missing.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210809170956.78536-1-dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2021-08-09 18:09:56 +01:00 committed by Gerd Hoffmann
parent 7bce330ae4
commit da77adbaf6
1 changed files with 10 additions and 0 deletions
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10
audio/audio.c
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@ -1622,10 +1622,20 @@ void audio_cleanup(void)
}
}
static bool vmstate_audio_needed(void *opaque)
{
/*
* Never needed, this vmstate only exists in case
* an old qemu sends it to us.
*/
return false;
}
static const VMStateDescription vmstate_audio = {
.name = "audio",
.version_id = 1,
.minimum_version_id = 1,
.needed = vmstate_audio_needed,
.fields = (VMStateField[]) {
VMSTATE_END_OF_LIST()
}